Company lists · Data refreshed September 2026

Top 25 Hvac field service software companies based in the United States

Name: Hvac field service software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 7,607 companies tracked

RevenueBase identified 7,607 hvac field service software companies headquartered in the United States as of September 2026 and tracks 72,387 professional contacts across them, including 23,067 with verified work emails. Houston is the largest hub.

This list covers hvac field service software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

7,607Companies

72,387Contacts tracked

23,067Verified emails

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The 25 largest hvac field service software companies based in the United States

Ranked by team size

Top 25 of 7,607 hvac field service software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac field service software companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Daikin Applied Americas	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	10001+	4,204 contacts →
	Indirect evidence “Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors.” Source: RevenueBase Database · checked Sep 28, 2026
2	Johnstone Supply	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,664 contacts →
	Indirect evidence “Making it easier for HVACR contractors to do business.” Source: RevenueBase Database · checked Sep 28, 2026
3	Coolsys	Indirect evidence	Brea, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	750 contacts →
	Indirect evidence “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Source: RevenueBase Database · checked Sep 28, 2026
4	Climate Pros, LLC	Partial evidence	Glendale Heights, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	554 contacts →
	Partial evidence “At Climate Pros, LLC, we are a leading commercial refrigeration and HVAC company specializing in the design, construction, and servicing of refrigeration systems across thousands…” Source: RevenueBase Database · checked Sep 28, 2026
5	ONE Hour Heating & AIR Conditioning	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	1,001-5,000	526 contacts →
	Indirect evidence “When homeowners want a reliable heater or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning.” Source: RevenueBase Database · checked Sep 28, 2026
6	Texas Airsystems	Partial evidence	Irving, TX, United StatesHQ checked Sep 28, 2026	201-500	523 contacts →
	Partial evidence “In business for over 45 years, Texas AirSystems has grown to be recognized as one of the premier partners for commercial HVAC solutions in Texas, boasting over 500 associates…” Source: RevenueBase Database · checked Sep 28, 2026
7	Horizon Services, LLC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	501-1,000	448 contacts →
	Indirect evidence “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Source: RevenueBase Database · checked Sep 28, 2026
8	Hoffman & Hoffman, INC	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 28, 2026	1,001-5,000	445 contacts →
	Indirect evidence “Since 1947, Hoffman & Hoffman, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
9	Source Refrigeration & Hvac	Indirect evidence	Brea, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	420 contacts →
	Indirect evidence “For up-to-date information, please see the CoolSys profile page.” Source: RevenueBase Database · checked Sep 28, 2026
10	Servicemax, A PTC Technology	Strong evidence	Pleasanton, CA, United StatesHQ checked Sep 28, 2026	501-1,000	408 contacts →
	Strong evidence “ServiceMax, a PTC technology, is on a mission to help customers keep the world running with asset-centric field service management software.” Source: RevenueBase Database · checked Sep 28, 2026
11	TWC Services, INC	Indirect evidence	Des Moines, IA, United StatesHQ checked Sep 28, 2026	501-1,000	371 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
12	United Mechanical	Partial evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	201-500	346 contacts →
	Partial evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 28, 2026
13	Brady Services	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 28, 2026	501-1,000	340 contacts →
	Indirect evidence “Since 1962, Brady has been committed to delivering innovative, sustainable building solutions that drive long-term success for our customers.” Source: RevenueBase Database · checked Sep 28, 2026
14	Lennox National Account Services	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 28, 2026	10001+	338 contacts →
	Partial evidence “Lennox National Account Services (Lennox NAS) is the leading HVAC commercial service company with technicians located nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
15	Havtech	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	201-500	333 contacts →
	Partial evidence “Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.” Source: RevenueBase Database · checked Sep 28, 2026
16	Habegger Corporation	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 28, 2026	501-1,000	330 contacts →
	Partial evidence “The Habegger Corporation \| Complete HVAC Solutions since 1952.” Source: RevenueBase Database · checked Sep 28, 2026
17	Gustave A. Larson	Indirect evidence	Pewaukee, WI, United StatesHQ checked Sep 28, 2026	201-500	324 contacts →
	Indirect evidence “Gustave A.” Source: RevenueBase Database · checked Sep 28, 2026
18	Boland	Partial evidence	Gaithersburg, MD, United StatesHQ checked Sep 28, 2026	201-500	323 contacts →
	Partial evidence “Boland is the leading commercial HVAC systems, services, and building energy solutions provider in the DC metro area.” Source: RevenueBase Database · checked Sep 28, 2026
19	Team Software By Workwave	Partial evidence	Holmdel, NJ, United StatesHQ checked Sep 28, 2026	501-1,000	289 contacts →
	Partial evidence “TEAM Software by WorkWave develops market-leading solutions for companies powered by distributed workforces, specifically those serving the cleaning, security and facility…” Source: RevenueBase Database · checked Sep 28, 2026
20	The Arcticom Group	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	259 contacts →
	Indirect evidence “At The Arcticom Group (TAG), our family of best-in-market operating companies delivers the highest-quality service and customer experience in commercial and industrial HVACR.” Source: RevenueBase Database · checked Sep 28, 2026
21	Servicetrade	Indirect evidence	Durham, NC, United StatesHQ checked Sep 28, 2026	201-500	242 contacts →
	Indirect evidence “ServiceTrade partners with commercial service contractors to deliver technology that enhances technician productivity, improves customer experiences, and drives scalable growth.” Source: RevenueBase Database · checked Sep 28, 2026
22	BFC Solutions	Partial evidence	Nashville, TN, United StatesHQ checked Sep 28, 2026	501-1,000	241 contacts →
	Partial evidence “BFC Solutions is the leader in essential HVAC services for commercial multi-site facilities and chains nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
23	Daikin Dala	Partial evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	10001+	240 contacts →
	Partial evidence “Daikin is a multinational and leading provider of HVAC (Heating, Ventilation, Air Conditioning and Refrigeration) solutions.” Source: RevenueBase Database · checked Sep 28, 2026
24	Airtron Heating & AIR Conditioning	Partial evidence	Columbus, OH, United StatesHQ checked Sep 28, 2026	1,001-5,000	214 contacts →
	Partial evidence “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Source: RevenueBase Database · checked Sep 28, 2026
25	Energy Air, INC	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 28, 2026	201-500	213 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: hvac field service software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names hvac field service software companies.
Partial evidence: Its own public description names part of hvac field service software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac field service software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 7,607 hvac field service software companies based in the United States

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Hvac field service software companies based in the United States at a glance

As of Sep 28, 2026

31.9%Verified-email coverage

9.5Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

3,627

11-50

2,975

51-200

741

201-500

114

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 7,607 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among hvac field service software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “hvac field service software companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names hvac field service software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among hvac field service software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 23,067 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Hvac field service software companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names hvac field service software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many hvac field service software companies are there based in the United States?

RevenueBase identified 7,607 hvac field service software companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Daikin Applied Americas, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most hvac field service software companies?

Houston leads with 109 headquartered companies, followed by New York (91) and San Antonio (58).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 23,067 verified decision-maker contacts tracked across these 7,607 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.